145 entries under cruel topic. ×

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malign(adjective, animal, mean, vicious)
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malignant(adjective, animal, mean, vicious)
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predatory(adjective, violent, vicious, fierce)
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ravenous(adjective, violent, vicious, fierce)
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rugged(adjective, strong, hard, tough, harsh)
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APASmart Define. (2016). implacable thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/implacable/thesaurus/synonyms
ChicagoSmart Define. 2016. "implacable thesaurus" https://smartdefine.org/implacable/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, implacable thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/implacable/thesaurus/synonyms>.
MLASmart Define. "implacable thesaurus" 24 March 2016. Web. 24 September 2026. <https://smartdefine.org/implacable/thesaurus/synonyms>